MSX80 Release 3 - It is a port of my fMSX/S60 emulator to the Nokia S80 platform. The S80 platform is used in Nokia 9200 series, 9300, 9300i and 9500 phone models ("Communicators").

It is good (if not mandatory even) to know something about fMSX/S60 because MSX80 works very similarly and I'm only going to explain things that are different here. Some important things you might want to know about MSX80:

System ROM files should be placed under /MSX/systemrom directory on the memory card (D: drive) or phone internal memory (C: drive).
Game files should be placed under /MSX directory on the memory card (D: drive) or phone internal memory (C: drive).
The emulation can be paused by pressing any of the four command keys located on the right side of the main display of the phone. Because of this it is not advisable to map any of these keys as MSX joystick/keyboard controls eventhough it is possible.
When pausing the emulation there is a small delay before the emulator's menu interface begins to respond to key presses; don't panic if the menu seems unresponsive, just wait a second and try again.
In the menus you can usually navigate back and forth with the command keys or by using Enter as selection key and Esc as back/cancel key. Some options can be changed with left and right arrow keys.

You should turn your phone's keyboard tones off before using the emulator. If keyboard tones are not turned off, the emulator's responsiveness to key presses will dramatically decrease making playing games very difficult.